What system has a better record of lifting people out of poverty? In fact the most impoverished nations are the least "capitalist" ones, in the free-market sense ("crony capitalism" as practiced in the Mideast, etc, isn't "free" and poverty is endemic there to a much greater degree.)

What system prevents conflict? Surely not Marxist systems which are entirely predicated on conflict between classes and preach "permanent revolution."

What would you replace money with -- barter? How would that work on a global scale?